diff options
Diffstat (limited to 'mysql-test/r/selectivity.result')
| -rw-r--r-- | mysql-test/r/selectivity.result | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/mysql-test/r/selectivity.result b/mysql-test/r/selectivity.result index 4238359c201..49298304ebd 100644 --- a/mysql-test/r/selectivity.result +++ b/mysql-test/r/selectivity.result @@ -1440,3 +1440,75 @@ a b i set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity; DROP TABLE t1,t2; set use_stat_tables=@save_use_stat_tables; +# +# Bug mdev-11096: range condition over column without statistical data +# +set use_stat_tables='preferably'; +set optimizer_use_condition_selectivity=3; +create table t1(col1 char(32)); +insert into t1 values ('a'),('b'),('c'),('d'), ('e'),('f'),('g'),('h'); +analyze table t1 persistent for columns () indexes (); +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +explain extended +select * from t1 where col1 > 'b' and col1 < 'e'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 8 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`col1` AS `col1` from `test`.`t1` where ((`test`.`t1`.`col1` > 'b') and (`test`.`t1`.`col1` < 'e')) +select * from t1 where col1 > 'b' and col1 < 'e'; +col1 +c +d +drop table t1; +set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity; +set use_stat_tables=@save_use_stat_tables; +# +# Bug mdev-9628: unindexed blob column without min-max statistics +# with optimizer_use_condition_selectivity=3 +# +set use_stat_tables='preferably'; +set optimizer_use_condition_selectivity=3; +create table t1(col1 char(32)); +insert into t1 values ('a'),('b'),('c'),('d'), ('e'),('f'),('g'),('h'); +analyze table t1; +Table Op Msg_type Msg_text +test.t1 analyze status Engine-independent statistics collected +test.t1 analyze status OK +create table t2(col1 text); +insert into t2 values ('a'),('b'),('c'),('d'), ('e'),('f'),('g'),('h'); +analyze table t2; +Table Op Msg_type Msg_text +test.t2 analyze status Engine-independent statistics collected +test.t2 analyze Warning Engine-independent statistics are not collected for column 'col1' +test.t2 analyze status OK +select * from t1 where col1 > 'b' and col1 < 'd'; +col1 +c +explain extended +select * from t1 where col1 > 'b' and col1 < 'd'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 8 28.57 Using where +Warnings: +Note 1003 select `test`.`t1`.`col1` AS `col1` from `test`.`t1` where ((`test`.`t1`.`col1` > 'b') and (`test`.`t1`.`col1` < 'd')) +select * from t2 where col1 > 'b' and col1 < 'd'; +col1 +c +explain extended +select * from t2 where col1 > 'b' and col1 < 'd'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 8 100.00 Using where +Warnings: +Note 1003 select `test`.`t2`.`col1` AS `col1` from `test`.`t2` where ((`test`.`t2`.`col1` > 'b') and (`test`.`t2`.`col1` < 'd')) +select * from t2 where col1 < 'b' and col1 > 'd'; +col1 +explain extended +select * from t2 where col1 < 'b' and col1 > 'd'; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 select `test`.`t2`.`col1` AS `col1` from `test`.`t2` where 0 +drop table t1,t2; +set optimizer_use_condition_selectivity=@save_optimizer_use_condition_selectivity; +set use_stat_tables=@save_use_stat_tables; |